Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Walnuts vs. white chocolate: which snack sharpens your mind?

NCT ID NCT06223672

Knowledge-focused Sponsor: Ohio State University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether eating walnuts daily for a week can improve thinking and memory in adults who feel their memory is slipping. Participants will eat either walnuts or a white chocolate bar each day, then switch after a break. Researchers will measure brain function and gut health to see if the type of fat matters.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
walnuts
What this could lead to
If it works, this could point toward a simple dietary change to help maintain thinking skills in people with early memory concerns.
What could go wrong
This is a very small, short-term study (88 people, 1 week per snack). It only looks at immediate effects, not long-term benefits or prevention of dementia.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 88 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

40 to 75 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Subjective cognitive impairment * BMI ≥30 kg/m2 * HbA1C \<6.5% Exclusion Criteria: * Diagnosis og cognitive impairment or dementia * Montreal Cognitive Assessment (MoCA) score of \<26 * Current or previous diagnosis of Diabetes or use of diabetes medications * Current diagnosis of or current treatment of cancer other than non-melanoma skin cancer * Gastrointestinal diseases or disorders (including pancreatic and gastric bypass surgery) where consumption of the study foods would be contraindication or where the disease or disorder could negatively affect nutrient absorption and/or would prevent participants from tolerating the study foods * Hyperthyroidism diagnosis * Food Allergy or intolerances * Any dietary restriction where consumption of the study foods, study meals/snack or meal challenge or any ingredient would be contraindicated * Use of some oil supplements in the past 4 weeks prior to enrolling * Pregnancy and lactation * Inability to access veins for venipuncture * Antibiotic use in the past month * Psychostimulant or nootropic medication use * Current use of supplements or medications for weight loss or following a weight loss program * Severe or uncontrolled autoimmune diseases * Current or previous diagnosis of severe kidney failure, liver cirrhosis and some pulmonary diseases * Heart disease events (including stroke or heart attack) within last 3 months prior to enrollment * Alcohol or drug abuse

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Cognitive decline are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

Cognitive Dysfunction subjective cognitive decline

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cognitive decline Cognitive impairment

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • The Ohio State University

    RECRUITING

    Columbus, Ohio, 43210, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.